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Anastrepha macrura Hendel

Recognition
Anastrepha macrura belongs to the daciformis species group, which differs from other species of Anastrepha in having the basal third of the scutellum brown, the male phallus extremely short (less than 0.30 mm long) and with the glans absent (as in the dentata group), and the female eversible membrane dorsobasally with a single, medially interrupted row of very stout scales.  Anastrepha macrura is one of several species with a vespidlike wing pattern comprising only a broad, uninterrupted, costal band covering all of cell r2+3, and a cubital streak.  It differs from all other species of the daciformis group by the broad brown stripe on the facial carina (although other species sometimes have brown or gray subcuticular discolorations) and absence of the presutural lateral pale stripe from the scutum. The shape of the dorsal brown mark on the frons, usually triangular or semicircular and broadest medially, is also a useful character, although it is not fully developed in many of the specimens examined, which appear to be teneral.

Description
Body predominantly red-brown to dark brown.

Head: Mostly yellow. Frons with brown transverse dorsal band, usually somewhat semicircular or triangular and broadest in line with ocellar tubercle, orbital seta usually at margin of band. Facial carina with broad dark stripe on ventral 2/3-4/5. Gena with large brown spot below eye. Occiput with large triangular areas along lateral sutures of median occipital sclerite, sometimes with diffuse brown area ventrally. Posterior orbital seta absent.

Thorax: Medial pale stripe strongly bilobed posteriorly, lobes moderately to extremely slender, usually extended to dorsocentral seta. Middle part of presutural lateral pale stripe absent, although lateral margin of scutum sometimes slightly paler than other dark areas; notopleuron with posterior third pale, including area around posterior notopleural seta. Presutural dorsocentral pale stripe connected to or narrowly separated from pale area on postpronotal lobe and pale sublateral stripe. Pleuron brown except following yellow areas: anterior and ventral margins of propleuron; anteroventral margin and posterodorsal third of anepisternum; two dorsal spots on katepisternum; katepimeron; anterior 1/4 of meron; anterior 2/3 of katatergite; and most of anatergite. Subscutellum and mediotergite entirely dark brown. Scutum microtrichose except for medial presutural bare area on and between dorsocentral stripes, at most extended 2/3 distance to transverse suture; notopleuron microtrichose; scutellum entirely microtrichose except small basal area on side.

Wing: C- and S-bands completely fused along costa to form broad, uninterrupted, orange to dark orange-brown marginal band; in cell br at most covering anterior half of section bordering cell bm, not extended to vein M; covering all of cells r1 and r2+3 and anterior margin of cell r4+5; well separated from apex of vein M. S-band incomplete, middle part between veins R4+5 and Cu1 absent; basal part paler than C-band; extended over base of cell cu1 and along vein Cu1 at most halfway to dm-cu; not extended into cell dm. V-band pale and diffuse; extended anteriorly only slightly into cell r4+5; distal arm absent. Vein M strongly curved apically; M ratio 1.41-2.04. Cell br 2/5 to 2/3 microtrichose, always with at least posterior half of section bordering cell bm bare. Cell bcu entirely microtrichose.

Anastrepha macrura, wing, photo (52845 bytes)
Wing.

Abdomen: Tergites, including base of syntergite 1+2 brown, except following white areas: extreme lateral margins of all tergites; small transverse band on basal half of syntergite 1+2; and medial stripe, slightly to broadly expanded on apical half of syntergite 1+2, not connected to basal band.

Female terminalia: Oviscape length 4.99-6.66 mm, 1.43-1.89 times as long as mesonotum. Eversible membrane, on expanded basal part, with most dorsal scales weakly sclerotized, but with one, medially interrupted row of large, strongly sclerotized, hooklike scales. Aculeus slender, no more than 0.05 mm wide, except at base, length 4.49-5.72 mm; tip needlelike, nearly circular in cross-section, nonserrate or with a few fine apical serrations, length 0.17-0.23 mm, width 0.035-0.04 mm.

Anastrepha macrura, eversible membrane, drawing (35447 bytes)
Anastrepha macrura, aculeus, drawing (21500 bytes)
Anastrepha macrura, aculeus, drawing (22707 bytes)
Eversible membrane, dorsal; aculeus tip, ventral and lateroventral.

Male terminalia: Lateral surstylus very short, barely extended beyond prensisetae. Phallus extremely short, less than 0.30 mm long; glans absent.


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Content by Allen L. Norrbom. Last Updated: February 1, 2003.